Scaffolding



INVENTOR Y! V 5 ATTORNEY (N0,Mode1.)

J, L. GLEVENGER.

SGAFFOLDING.

Patented July 22 1884.

N PETERS. Phnlo-Lilhognph illustrated in the which UNIT D STATES PATENTOFFICE.

JOHN L. CLEVENGER, OF DAYTON, OHIO.

SCAFFOLDING.

SPECIFICATION forming part of Letters Patent No. 302,240, dated July 22,1884-.

Application filed May 12, 1884. (No model.) a

I0 60% whom it may concern:

Be it known that 1, JOHN L. CLEVENGER, a citizen of the United States,residingat Dayton, in the'county of Montgomery and State of Ohio, haveinvented a certain new and useful Improvement in Scaffolding; and I dohereby declare that the following is a full, clear, and exactdescription of the invention, which will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters of reference markedthereon, which form a part of this specification.

My invention relates to improvements in scaffolding adapted tosupporting drills in the drilling of iron columns and caps used inbuilding; and it consists of a jointed scaffold with appliances toattach the same to the pavement and structure. The object is a portablescaffold,which shall be readily erected for the purpose. I attain theobject by the mechanism accompanying drawings, in

Figure 1 is a perspective of the scaffold; Fig. 2, the platform-strut;Fig. 3, side view of the hinge; Fig. 4, top view of same.

In Fig. 1 the scaffold is shown as erected for use in its relation to abuilding and pavement.

The scaffold is composed of a'number of scantlings jointed togetherforthe framework, and an independent adjustable strut of two pieces, whichis connected to the standard by chain J. A andE form the base. Thelatter is jointed to near the center of the former, and in use therelative position of the two is that of a right angle. At the center ofthe part A is hinged the standard G, and near the ends of the same arehinged the braces B B. the upper ends of the same being hinged to saidstandard. These form the lateral braces. The lower end of the rearbrace, C, is hinged to part E, and the upper end is hinged to thestandard. This. braces in the direction of the building. The standard isprovided with strut-rods to stiffen the same, and a series of slats, a,are attached to the same, to serve as a I ladder for the workmen tostand upon. A platform, F, is provided for the same purpose. The sameembraces the standard, and is held in position by stays 1), whose endsdrop into notches in the side of the standard, or are held by a bolt.When the base is set in proper position, the strut D is placed on base Aand adjusted by the clamps m m, to bear against the under side of thecap, and by means of the screw S it is made to bear very snugly againstthe two surfaces, thereby holding the base firmly in position. the topof the standard, the screw I in base piece is used. This bears againstthe surface beneath, and the adjustment is thereby readily effected.

Figs. 3 and 4 exhibit an enlarged view of the hinge which forms theseveral joints. The pin I is nicely fitted to avoid play in the joints,and when in position is held by the wire key R. A v

The use of the scaffold from the previous description will be readilyunderstood, the drill having a bearing against the standard as the sameis operated.

In taking down the scaffold, the preferable way is to first remove theindependent strut, remove the pins at lower end of side bracesfirstremoving the platform-and fold these against the standard, whichlikewise detaches from the base, fold the base-pieces together, and theparts are in shape for transportation. Having fully described myinvention, what I desire to secure by Letters Patent is- The portablescaffolding, jointed as specified, consisting of base parts A E, sidebraces, B, end brace, G, and standard G, combined and arranged withreference to the independent adjustable strut D, substantially as setforth.

In testimony that I claim the foregoing as my ownI affiX my signature inpresence of two witnesses.

JOHN L. CLEVENGER.

Vitnesses:

B. PIOKERING, SUMNER T. SMITH.

To adj ust the position of Y

